John McEnroe

Retired World No. 1 Tennis Player in Singles & Doubles; International Tennis Hall of Famer & Author of "You Cannot Be Serious"

Evan Spiegel

Co-Founder & CEO of Snap Inc.

Eric Holder

82nd Attorney General of the United States (2009-2015); Partner, Covington & Burling LLP

Gary Kelly

Vice Chairman & CEO of Southwest Airlines

Tilda Swinton

Actress Known for Her Role in "The Chronicles of Narnia: The Lion, the Witch and the Wardrobe" and "Trainwreck"

Queen Rania Al Abdullah

Royal Matriarch of Jordan; Activist and Global Humanitarian

Trevor Noah

South African Comedian and Political Commentator; Host of "The Daily Show"

Trevor Noah speaks at Princeton University's 2021 Class Day

Serena Williams

Iconic Professional Tennis Player & Olympic Gold Medalist; Activist, Philanthropist & Entrepreneur

Dr. Phil McGraw

"Dr. Phil" Host, NY Times Bestselling Author, Psychologist